Bennett fracture
| Classification according to ICD-10 | |
|---|---|
| S62.2 | 1st metacarpal fracture Bennett's fracture |
| ICD-10 online (WHO version 2019) | |
The Bennett fracture (also known as Bennett dislocation fracture ) is a fracture at the base of the first metacarpal bone that extends into the thumb saddle joint . The metacarpal bone is moved proximally by the tension of the tendon of the abductor pollicis longus that attaches here . Usually a smaller triangular fragment remains ulnar at the joint.
Accident mechanism
The fracture usually arises from a compression trauma on the adducted thumb.
therapy
The reduction is performed with abduction of the thumb. Depending on the result of the reduction, conservative immobilization (plaster cast) or surgical stabilization is carried out.
Differential diagnosis
The Bennett fracture must be distinguished from fractures of the base of the first metacarpal bone that do not pull into the joint ( Winterstein fracture ). A Bennett fracture with a debris fracture is called a Rolando fracture .
literature
- Pschyrembel: Clinical Dictionary . 257th edition. de Gruyter Berlin / New York, ISBN 3-11-012692-3
- A. Greenspan: Skeletal Radiology . German edition. VCH Verlagsgesellschaft, Weinheim, ISBN 3-527-15404-3
Web links
- Schemas at gvle.de
- Edward Hallaran Bennett at whonamedit.com
- Bennett's fracture at whonamedit.com
